From eec5ce013aa029cf6c91fba4838de13410f65024 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 22 Jul 2011 07:43:15 -0300 Subject: [PATCH] [media] V4L: sh_mobile_ceu_camera: output image sizes must be a multiple of 4 CEU can only produce images with 4 pixel aligned width and height. Enforce this alignment, adjust comments and simplify some calculations. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/sh_mobile_ceu_camera.c | 49 ++++++++++++++-------- 1 file changed, 31 insertions(+), 18 deletions(-) diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c index 8615fb81775f..f753df14aa3f 100644 --- a/drivers/media/video/sh_mobile_ceu_camera.c +++ b/drivers/media/video/sh_mobile_ceu_camera.c @@ -121,7 +121,7 @@ struct sh_mobile_ceu_dev { }; struct sh_mobile_ceu_cam { - /* CEU offsets within scaled by the CEU camera output */ + /* CEU offsets within the camera output, before the CEU scaler */ unsigned int ceu_left; unsigned int ceu_top; /* Client output, as seen by the CEU */ @@ -628,22 +628,22 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) left_offset = cam->ceu_left; top_offset = cam->ceu_top; - /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */ + WARN_ON(icd->user_width & 3 || icd->user_height & 3); + + width = icd->user_width; + if (pcdev->image_mode) { in_width = cam->width; if (!pcdev->is_16bit) { in_width *= 2; left_offset *= 2; } - width = icd->user_width; - cdwdr_width = icd->user_width; + cdwdr_width = width; } else { - int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, + int bytes_per_line = soc_mbus_bytes_per_line(width, icd->current_fmt->host_fmt); unsigned int w_factor; - width = icd->user_width; - switch (icd->current_fmt->host_fmt->packing) { case SOC_MBUS_PACKING_2X8_PADHI: w_factor = 2; @@ -653,10 +653,10 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) } in_width = cam->width * w_factor; - left_offset = left_offset * w_factor; + left_offset *= w_factor; if (bytes_per_line < 0) - cdwdr_width = icd->user_width; + cdwdr_width = width; else cdwdr_width = bytes_per_line; } @@ -664,7 +664,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) height = icd->user_height; in_height = cam->height; if (V4L2_FIELD_NONE != pcdev->field) { - height /= 2; + height = (height / 2) & ~3; in_height /= 2; top_offset /= 2; cdwdr_width *= 2; @@ -686,6 +686,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) ceu_write(pcdev, CAMOR, camor); ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); + /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ ceu_write(pcdev, CFSZR, (height << 16) | width); ceu_write(pcdev, CDWDR, cdwdr_width); } @@ -1414,7 +1415,10 @@ static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, capsr = capture_save_reset(pcdev); dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); - /* 1. - 2. Apply iterative camera S_CROP for new input window. */ + /* + * 1. - 2. Apply iterative camera S_CROP for new input window, read back + * actual camera rectangle. + */ ret = client_s_crop(icd, a, &cam_crop); if (ret < 0) return ret; @@ -1498,8 +1502,9 @@ static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, ceu_write(pcdev, CFLCR, cflcr); } - icd->user_width = out_width; - icd->user_height = out_height; + icd->user_width = out_width & ~3; + icd->user_height = out_height & ~3; + /* Offsets are applied at the CEU scaling filter input */ cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; @@ -1538,7 +1543,7 @@ static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, * CEU crop, mapped backed onto the client input (subrect). */ static void calculate_client_output(struct soc_camera_device *icd, - struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) + const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) { struct sh_mobile_ceu_cam *cam = icd->host_priv; struct device *dev = icd->parent; @@ -1623,7 +1628,7 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, } /* 1.-4. Calculate client output geometry */ - calculate_client_output(icd, &f->fmt.pix, &mf); + calculate_client_output(icd, pix, &mf); mf.field = pix->field; mf.colorspace = pix->colorspace; mf.code = xlate->code; @@ -1700,6 +1705,10 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, pcdev->field = field; pcdev->image_mode = image_mode; + /* CFSZR requirement */ + pix->width &= ~3; + pix->height &= ~3; + return 0; } @@ -1725,7 +1734,8 @@ static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, /* FIXME: calculate using depth and bus width */ - v4l_bound_align_image(&pix->width, 2, 2560, 1, + /* CFSZR requires height and width to be 4-pixel aligned */ + v4l_bound_align_image(&pix->width, 2, 2560, 2, &pix->height, 4, 1920, 2, 0); width = pix->width; @@ -1778,6 +1788,9 @@ static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, pix->height = height; } + pix->width &= ~3; + pix->height &= ~3; + dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", __func__, ret, pix->pixelformat, pix->width, pix->height); @@ -1824,8 +1837,8 @@ static int sh_mobile_ceu_set_livecrop(struct soc_camera_device *icd, out_height != f.fmt.pix.height)) ret = -EINVAL; if (!ret) { - icd->user_width = out_width; - icd->user_height = out_height; + icd->user_width = out_width & ~3; + icd->user_height = out_height & ~3; ret = sh_mobile_ceu_set_bus_param(icd, icd->current_fmt->host_fmt->fourcc); } -- 2.20.1